Pixel power supply method, device, liquid crystal display, medium and product

Abstract

The present application is applicable to the field of displays and provides a method, device, liquid crystal display, medium and product for powering a pixel. The method is applied to a liquid crystal display, and the liquid crystal display is provided with multiple underdamped oscillation circuits. The method determines the target grayscale voltage required to display the target image during the process of the liquid crystal display switching from the current image to the target image; when powering each pixel in the target image in turn, the first power supply duration and the second power supply duration of the current pixel are determined according to the power supply order of the current pixel among all the pixel points; within the first power supply duration of the current pixel point, the underdamped oscillation circuit corresponding to the current pixel point is controlled to power the current pixel point; within the second power supply duration of the current pixel point, the liquid crystal display is controlled to power the current pixel point based on the target grayscale voltage. This method can greatly avoid image distortion under high grayscale or low grayscale images and improve the display quality of the image.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a method and device for powering pixels, a liquid crystal display, a medium, and a product. Background Art

[0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is a liquid crystal display that uses thin film transistor technology to drive pixels. It has the advantages of high resolution, high color saturation, high brightness and low energy consumption.

[0003] In the context of large-size, high-resolution, and high-refresh-rate applications, TFT-LCDs are affected by the low-pass effect of long traces when switching images. The voltage signal jumps along the front section and slowly climbs, resulting in inaccurate voltage when powering the pixels and slow rotation of the liquid crystal molecules.

[0004] Existing pixel power supply methods often use liquid crystal drive acceleration technology with overdrive (OD) function. Applying a drive voltage higher or lower than the grayscale value of the target image to the pixel can increase the torque applied to the liquid crystal molecules, accelerate the rotation of the liquid crystal molecules, overcome the dynamic effect of the liquid crystal capacitor and the mechanical action of the liquid crystal molecules, shorten the response time of the liquid crystal, and thus offset the influence of the channel low-pass effect.

[0005] However, when the grayscale value of the target image is close to or equal to the highest (or lowest) grayscale, the existing pixel power supply method is limited by hardware, which reduces the effect of the above-mentioned OD function and seriously affects the display quality of the image. Summary of the Invention

[0006] The embodiments of the present application provide a pixel power supply method, device, liquid crystal display, medium and product, which can greatly avoid image distortion in high grayscale or low grayscale images and improve image display quality.

[0007] In a first aspect, an embodiment of the present application provides a pixel power supply method, which is applied to a liquid crystal display. The liquid crystal display is provided with multiple underdamped oscillator circuits, each of which is connected to a pixel. The method includes:

[0008] In the process of the liquid crystal display switching from a current image to a target image, determining a target grayscale voltage required to display the target image;

[0009] When powering each pixel in the target image in sequence, a first power supply duration and a second power supply duration of the current pixel are determined according to the power supply order of the current pixel among all the pixels, and the sum of the first power supply duration and the second power supply duration is the fixed power supply duration of the current pixel;

[0010] During a first power supply duration of the current pixel, controlling the underdamped oscillation circuit corresponding to the current pixel to supply power to the current pixel;

[0011] During the second power supply duration of the current pixel, the liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage.

[0012] In a second aspect, an embodiment of the present application provides a pixel power supply device, which is configured in a liquid crystal display. The liquid crystal display is provided with multiple underdamped oscillation circuits, each of which is connected to a pixel. The device includes:

[0013] A first determining module is used to determine a target grayscale voltage required to display a target image when the liquid crystal display switches from displaying a current image to displaying a target image;

[0014] A second determining module is configured to determine, when powering each pixel in the target image in sequence, a first power supply duration and a second power supply duration of the current pixel according to the power supply order of the current pixel among all the pixels, where the sum of the first power supply duration and the second power supply duration is a fixed power supply duration of the current pixel;

[0015] A first control module is configured to control an underdamped oscillator circuit corresponding to the current pixel point to supply power to the current pixel point within a first power supply duration of the current pixel point;

[0016] The second control module is configured to control the liquid crystal display to supply power to the current pixel point based on the target grayscale voltage within a second power supply duration of the current pixel point.

[0017] In a third aspect, an embodiment of the present application provides a liquid crystal display, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in any one of the first aspects when executing the computer program.

[0018] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the method as described in any one of the first aspects.

[0019] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a liquid crystal display, enables the liquid crystal display to execute any one of the methods described in the first aspect above.

[0020] Embodiments of the present application provide a method, device, liquid crystal display, medium and product for powering a pixel point. The method is applied to a liquid crystal display, wherein the liquid crystal display is provided with multiple underdamped oscillation circuits, each of which is connected to a pixel point. The method includes: in the process of the liquid crystal display switching from a displayed current image to a target image, determining a target grayscale voltage required to display the target image; when powering each pixel point in the target image in sequence, determining a first power supply duration and a second power supply duration of the current pixel point according to the power supply order of the current pixel point among all pixel points, the sum of the first power supply duration and the second power supply duration being a fixed power supply duration of the current pixel point; within the first power supply duration of the current pixel point, controlling the underdamped oscillation circuit corresponding to the current pixel point to power the current pixel point; within the second power supply duration of the current pixel point, controlling the liquid crystal display to power the current pixel point based on the target grayscale voltage. By utilizing the above technical solution, by setting an underdamped oscillation circuit in the liquid crystal display, it is possible to control the underdamped oscillation circuit corresponding to the current pixel point to power the current pixel point during the first power supply time of the current pixel point, and to control the liquid crystal display to power the current pixel point based on the target grayscale voltage during the second power supply time of the current pixel point. This can greatly avoid image distortion under high grayscale or low grayscale images and improve the display quality of the image. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a schematic diagram of a liquid crystal display provided by the prior art when the OD function is not used;

[0023] Figure 2 This is a schematic diagram of a liquid crystal display provided by the prior art when using the OD function;

[0024] Figure 3 1 is a schematic structural diagram of an underdamped oscillator circuit provided in one embodiment of the present application;

[0025] Figure 4 1 is a waveform diagram of a voltage source and an oscillating voltage provided in one embodiment of the present application;

[0026] Figure 5 This is a flowchart of a method for powering a pixel provided by an embodiment of the present application;

[0027] Figure 6 This is a flowchart of a method for powering a pixel provided by another embodiment of the present application;

[0028] Figure 7 This is a schematic structural diagram of a liquid crystal display provided by an embodiment of the present application;

[0029] Figure 8 1 is a waveform diagram of a control signal and a driving voltage provided in an embodiment of the present application;

[0030] Figure 9 This is a structural block diagram of a pixel power supply device provided in one embodiment of the present application;

[0031] Figure 10 This is a structural diagram of a liquid crystal display provided in one embodiment of the present application. DETAILED DESCRIPTION

[0032] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0033] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0034] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0035] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0036] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0037] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0038] Figure 1 This is a schematic diagram of a liquid crystal display provided by the prior art when the OD function is not used, such as Figure 1 As shown, Figure 1 (a) can be a schematic diagram of the driving voltage of an image over time. For example, when the LCD switches from the current image to the target image, the driving voltage changes directly from the current grayscale voltage of the current image to the target grayscale voltage required by the target image. Figure 1 (b) is a schematic diagram of image brightness over time. The LCD is affected by the low-pass effect of long traces. The brightness of the voltage signal jumps along the front section and rises slowly. It takes a certain response time to reach the target brightness required by the target image. Figure 1 (c) is the final displayed image of the target image, and the image quality is affected to a certain extent.

[0039] Figure 2 This is a schematic diagram of a liquid crystal display provided by the prior art when using the OD function, such as Figure 2 As shown, in Figure 2 In (a), when the liquid crystal display switches from the current image to the target image, the front section of the driving voltage can be higher than the target grayscale voltage, and then switch to the target grayscale voltage after a certain period of time; accordingly, Figure 2 In (b), the response time of the LCD is shortened, and the target brightness required by the target image can be quickly achieved; Figure 2 (c) is the final displayed image of the target image, which can improve the image quality to a certain extent.

[0040] It's important to note that the OD function uses an algorithm to determine the pixel drive voltage by querying a data chart, thereby accelerating liquid crystal inversion and offsetting the effects of the channel's low-pass effect. Table 1 shows the data chart for the OD function. As can be seen, when the grayscale value of the current frame image is close to or equal to the highest (or lowest) grayscale, the OD function is subject to hardware limitations. The data driver will only output a fixed grayscale voltage corresponding to 0-255, unable to go higher or lower. This causes the OD function to be completely ineffective or extremely ineffective.

[0041] Table 1 Data chart of OD algorithm

[0042]

[0043] Based on this, the embodiments of the present application provide a pixel power supply method and a liquid crystal display. By setting an under-damped oscillation circuit of hardware OD within the plane, the OD function can be realized without increasing the hardware cost. Therefore, in the context of high resolution and high refresh, combined with algorithm OD, an effect that exceeds the traditional algorithm OD is achieved. At the same time, it solves the problem that the traditional algorithm OD has poor effect when the target image is high grayscale, and avoids the brightness distortion of the picture at high grayscale or low grayscale to a great extent.

[0044] Specifically, the liquid crystal display of the embodiment of the present application can be provided with multiple underdamped oscillator circuits, each of which is connected to a pixel. In this embodiment, the underdamped oscillator circuit can be used to power the connected pixel. For example, the voltage output by the underdamped oscillator circuit can be used as the driving voltage of the connected pixel to achieve power supply to the pixel. The specific timing of power supply can be controlled by the liquid crystal display according to actual conditions. The specific circuit composition of the underdamped oscillator circuit is not limited.

[0045] Figure 3 : is a structural diagram of an underdamped oscillation circuit provided by an embodiment of the present application, such as Figure 3 As shown, the underdamped oscillation circuit may include an analog inductor (i.e., an active inductor L) composed of a voltage source Vd, a first resistor R1 and a thin film transistor T1, a second resistor R2, and a capacitor C, wherein one end of the active inductor L, the second resistor R2, and one end of the capacitor C are connected in series in sequence, the other end of the active inductor L is connected to the input voltage, and the other end of the capacitor C is grounded. The voltage Vo of the capacitor C can be used as the oscillation voltage output by the underdamped oscillation circuit and connected to the corresponding pixel point.

[0046] Furthermore, the damping coefficient of the underdamped oscillator circuit is Active Inductor Cgs is the gate-source parasitic capacitance of the thin film transistor T1, and gm is the transconductance of the thin film transistor T1. That is, the inductance L of the active inductor can be controlled by designing the parameters of the T1 transistor and R1.

[0047] In this link, R2, C and active inductor L can form an RLC series resonant circuit. When the damping coefficient ε is less than 1, that is, When , the RLC series resonant circuit can enter an underdamped oscillation state, that is, the underdamped oscillation circuit required in this embodiment, and the capacitor voltage can be used as the oscillation voltage output by the underdamped oscillation circuit. For example, the capacitor voltage can be charged in an attenuated oscillation near the voltage source Vd, but will not exceed twice the voltage source Vd.

[0048] Among them, the resonant angular frequency Underdamped oscillation angular frequency The time it takes to oscillate a peak can be calculated by calculating the parameters of R2, L, and C. Here, to may be referred to as a preset overshoot duration or overshoot time.

[0049] Figure 4 : is a waveform diagram of a voltage source and an oscillating voltage provided in one embodiment of the present application, such as Figure 4 As shown, the oscillation voltage is the capacitor voltage Vo output by the under-damped oscillation circuit. The signal overshoot that occurs within the overshoot time to is required by the liquid crystal display. If the voltage signal in the time period after the overshoot time to can be output normally according to Vd, then an OD function effect similar to that mentioned in the background technology can be achieved.

[0050] Figure 5 FIG. 1 is a flow chart of a method for powering a pixel provided by an embodiment of the present application. Figure 5 As shown, the method includes:

[0051] S101 : When a liquid crystal display switches from displaying a current image to displaying a target image, determine a target grayscale voltage required to display the target image.

[0052] S102. When powering each pixel in the target image in sequence, determine the first power supply duration and the second power supply duration of the current pixel according to the power supply order of the current pixel among all the pixels, and the sum of the first power supply duration and the second power supply duration is the fixed power supply duration of the current pixel.

[0053] The target image may refer to an image to be switched from the current image, and the target grayscale voltage is a grayscale voltage required to display the target image.

[0054] It should be noted that the process of displaying the target image can be considered as the process of supplying power to each pixel in the target image in turn. For example, starting from the pixel in the first column of the first row, the arranged pixels can be supplied with power row by row or column by column to realize the display of the entire target image. Therefore, each pixel can have a corresponding power supply order, and the current pixel can be regarded as the pixel that currently needs to be charged.

[0055] The fixed power supply duration can be understood as the overall power supply duration of the current pixel, and can be fixedly allocated according to the image display duration. For example, if the image display duration is 10s and the number of pixels is 100, then the fixed power supply duration for each pixel is 0.1s; further, the fixed power supply duration can be segmented, the first power supply duration is the first half of the fixed power supply duration, and the second power supply duration is the second half of the fixed power supply duration. Different driving voltages can be applied to the pixels in different power supply periods.

[0056] Specifically, this embodiment can determine the first power supply duration and the second power supply duration of the current pixel point based on the power supply sequence of the current pixel point among all pixel points. The specific determination process is not limited. For example, the power supply sequence of the current pixel point can be input into a certain power supply duration model to output the first power supply duration and the second power supply duration of the current pixel point. The power supply duration model can be a pre-trained neural network model. Alternatively, this embodiment can also first determine the first power supply duration of the current pixel point based on the power supply sequence of the current pixel point among all pixel points, and then determine the second power supply duration of the current pixel point based on the fixed power supply duration and the first power supply duration. Among them, the method of determining the first power supply duration can vary depending on the power supply sequence of the current pixel point, and this embodiment will not be further elaborated on this.

[0057] S103 : Controlling an underdamped oscillation circuit corresponding to the current pixel to supply power to the current pixel within a first power supply duration of the current pixel.

[0058] After determining the first power supply duration and the second power supply duration of the current pixel, different power supply controls can be performed through the current pixel within different power supply durations.

[0059] For example, during the first power supply period of the current pixel point, the under-damped oscillation circuit corresponding to the current pixel point can be controlled to power the current pixel point. Specifically, the liquid crystal display can be controlled to turn on the under-damped oscillation circuit, and the oscillation voltage output by the damped oscillation circuit can be used to power the current pixel point. The input voltage of the damped oscillation circuit can be configured according to actual conditions. For example, the input voltage of the damped oscillation circuit can be a fixed voltage value, or the input voltage of the damped oscillation circuit can also be configured with different voltage values ​​according to different power supply sequences, as long as the power supply to the current pixel point can be achieved.

[0060] S104 : Control the liquid crystal display to power the current pixel point based on the target grayscale voltage within the second power supply duration of the current pixel point.

[0061] For example, during the second power supply time of the current pixel point, the liquid crystal display can be controlled to power the current pixel point based on the target grayscale voltage. Specifically, the current pixel point can be powered directly according to the target grayscale voltage, or a certain voltage value can be added to the target grayscale voltage to power the current pixel point. The specific power supply may vary depending on the current pixel point, and this embodiment does not further limit this.

[0062] A pixel power supply method provided in this embodiment is applied to a liquid crystal display, wherein the liquid crystal display is provided with multiple under-damped oscillation circuits, each of which is connected to a pixel. The method includes: in the process of the liquid crystal display switching from a current image to a target image, determining a target grayscale voltage required to display the target image; when powering each pixel in the target image in sequence, determining a first power supply duration and a second power supply duration of the current pixel according to the power supply order of the current pixel among all pixel points, wherein the sum of the first power supply duration and the second power supply duration is a fixed power supply duration of the current pixel; during the first power supply duration of the current pixel, controlling the under-damped oscillation circuit corresponding to the current pixel to power the current pixel; and during the second power supply duration of the current pixel, controlling the liquid crystal display to power the current pixel based on the target grayscale voltage. By using this method, by setting an underdamped oscillation circuit in a liquid crystal display, the underdamped oscillation circuit corresponding to the current pixel point can be controlled to power the current pixel point during the first power supply time of the current pixel point, and the liquid crystal display can be controlled to power the current pixel point based on the target grayscale voltage during the second power supply time of the current pixel point. This can greatly avoid image distortion under high grayscale or low grayscale images and improve the display quality of the image.

[0063] Figure 6This is a flowchart of a pixel power supply method provided by another embodiment of the present application. This embodiment further optimizes the first power supply duration and the second power supply duration of the current pixel point according to the power supply order of the current pixel point among all pixel points to: determine whether the current pixel point is in the priority power supply queue and obtain a judgment result; determine the first power supply duration and the second power supply duration of the current pixel point according to the judgment result. Figure 6 As shown, the method includes:

[0064] S201 : When a liquid crystal display switches from displaying a current image to displaying a target image, determine a target grayscale voltage required to display the target image.

[0065] S202, when powering each pixel in the target image in sequence, determining whether the current pixel is in a priority power supply queue, and obtaining a determination result;

[0066] The priority power supply team can be considered as a collection of pixels that are given priority power supply. For example, it can be configured according to a fixed power supply duration. For example, when the fixed power supply duration is 6s, the pixels powered within the first third of the duration (i.e. 2s) can be used as the priority power supply team. Alternatively, the priority power supply team can be determined according to a set number or a set number of rows, such as all pixels in the first three rows can be used as the priority power supply team.

[0067] Specifically, when powering each pixel in the target image in turn, it is possible to first determine whether the current pixel is in the priority power supply queue and obtain a corresponding judgment result, such as performing the above judgment based on the identification information of the current pixel.

[0068] S203: Determine a first power supply duration and a second power supply duration of the current pixel point according to the judgment result.

[0069] After obtaining the judgment result of the current pixel point through the above steps, the first power supply duration and the second power supply duration of the current pixel point can be determined based on different judgment results. For example, the first power supply duration can be determined by appropriately shortening or extending the corresponding first power supply duration based on different judgment results, thereby calculating the corresponding second power supply duration; the corresponding first power supply duration and the second power supply duration can also be determined by performing certain calculations based on different judgment results.

[0070] For example, the data line input to the pixel point can be segmented, and the hardware under-damped oscillation circuit and software algorithm can be combined and applied according to the different pixel positions and actual needs. In the early section of the data line, the under-damped oscillation circuit is controlled to provide power; in the later section of the data line, a separate under-damped oscillation circuit or a separate software algorithm is affected by the low-pass effect of the long line and cannot cover the power supply requirements. Therefore, the driving functions of the algorithm and the under-damped oscillation circuit can be turned on at the same time to improve the over-driving effect of the later section.

[0071] In some embodiments, determining the first power supply duration and the second power supply duration of the current pixel point according to the judgment result includes:

[0072] If the current pixel is located in the priority power supply queue, a first power supply duration of the current pixel is determined based on the current grayscale value of the current image, the target grayscale value of the target image, and a preset duration table. The preset duration table is used to store the correspondence between the first candidate grayscale value, the second candidate grayscale value, and the power supply duration. The first candidate grayscale value is the grayscale value of the current frame image, and the second candidate grayscale value is the grayscale value of the next frame image.

[0073] The difference between the fixed power supply duration and the first power supply duration is used as the second power supply duration of the current pixel.

[0074] It can be considered that if the grayscale values ​​of the two frames of images do not change much, there will be a risk of overcharging if the pixel is powered after waiting for the preset overshoot time. The preset time table can be pre-configured to store the correspondence between the first candidate grayscale value, the second candidate grayscale value and the power supply time.

[0075] Table 2 may be a preset duration table provided in this embodiment. As shown in Table 2, the first candidate grayscale value may represent the grayscale value of the current frame image, and the second candidate grayscale value may represent the grayscale value of the next frame image. Different power supply durations may be set based on the grayscale values ​​of the two frames. Thus, if the grayscale values ​​do not vary much between the two frames, a shorter power supply duration, such as 0.1 to, may be set. This allows the normal voltage to be switched back to for power supply at the time point of 0.1 to ensure that overcharging does not occur. Wherein, to is the preset overshoot duration.

[0076] Table 2 Preset duration table

[0077]

[0078] In one embodiment, if the current pixel is in the priority power supply queue, it means that the input voltage of the current pixel is at the front end of the data line. At this time, based on the current grayscale value of the current image and the target grayscale value of the target image, a preset duration table can be queried to determine the first power supply duration of the current pixel. Then, the difference between the fixed power supply duration and the first power supply duration can be used as the second power supply duration of the current pixel. The current grayscale value and the target grayscale value can refer to the grayscale values ​​corresponding to the current image and the target image, respectively.

[0079] In some embodiments, during a first power supply duration of a current pixel, controlling an underdamped oscillator circuit corresponding to the current pixel to power the current pixel includes:

[0080] During a first power supply duration of the current pixel, the target grayscale voltage is input into the underdamped oscillation circuit, and the underdamped oscillation circuit is controlled to be turned on;

[0081] Calculating a first oscillation voltage output by the under-damped oscillation circuit based on a target grayscale voltage, a current grayscale voltage of a current image, and a damping coefficient of the under-damped oscillation circuit, wherein the target grayscale voltage corresponds to the target grayscale value in a one-to-one manner, and the current grayscale voltage corresponds to the current grayscale value in a one-to-one manner;

[0082] The liquid crystal display is controlled to use the first oscillation voltage to power the current pixel.

[0083] In some embodiments, controlling the liquid crystal display to power the current pixel based on the target grayscale voltage during the second power supply duration of the current pixel includes:

[0084] During the second power supply duration of the current pixel, controlling the under-damped oscillation circuit to be cut off;

[0085] The liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage.

[0086] During specific implementation, the control signal may be used to control the under-damped oscillation circuit to be turned on or off, thereby controlling the under-damped oscillation circuit corresponding to the current pixel to supply power to the current pixel.

[0087] Figure 7 : is a structural diagram of a liquid crystal display provided by an embodiment of the present application, such as Figure 7The figure shows the internal architecture of an LCD display. Vsw is considered a control signal. When power is initially supplied, Vsw is set to a low level, turning off Ts1-Ts4. Before the data driver's voltage source Vd enters the data line, the underdamped oscillator circuit (shown as the In OD link in the figure) first enters the underdamped oscillator circuit. This circuit oscillates attenuated voltage around the voltage source Vd, outputting a capacitor voltage to the data line to power the pixels. Furthermore, if desired, Vsw can be set to a high level before or just before the end of the preset overshoot duration to, turning on Ts1-Ts4 and short-circuiting (or turning off) the underdamped oscillator circuit. At this point, the data driver's data signal (i.e., voltage source Vd) begins to normally input to the pixels for power.

[0088] Figure 8 : is a waveform diagram of a control signal and a driving voltage provided by an embodiment of the present application, such as Figure 8 As shown, the In OD waveform is the driving voltage of the pixel. In this embodiment, the charging time tp of a single pixel can be divided into two time periods. During the overshoot time to (i.e., the first power supply duration), Vsw is at a low level, and the oscillation voltage output by the underdamped oscillation circuit enters the data line and serves as the driving voltage to supply power to the pixel; during the second power supply duration, Vsw is at a high level, the underdamped oscillation circuit is cut off, and the voltage source Vd can be used as the driving voltage to supply power to the pixel.

[0089] For example, if the current pixel is in the priority power supply queue, the voltage source Vd can be set to the target grayscale voltage during the first power supply duration of the current pixel, input into the underdamped oscillation circuit, and the underdamped oscillation circuit can be controlled to conduct, so that the underdamped oscillation circuit forms an oscillation waveform based on the voltage source Vd and outputs a first oscillation voltage, and the liquid crystal display is controlled to use the first oscillation voltage to power the current pixel. Furthermore, during the second power supply duration of the current pixel, the underdamped oscillation circuit can be controlled to be cut off, so that the voltage source Vd directly enters the data line, so that the liquid crystal display can directly power the current pixel according to the target grayscale voltage. The first oscillation voltage of the underdamped oscillation circuit can be calculated based on the target grayscale voltage, the current grayscale voltage of the current image, and the damping coefficient of the underdamped oscillation circuit, with the current grayscale voltage corresponding to the current grayscale value one-to-one, and the target grayscale voltage corresponding to the target grayscale value one-to-one.

[0090] In some embodiments, determining the first power supply duration and the second power supply duration of the current pixel point according to the judgment result includes:

[0091] If the current pixel point is not in the priority power supply queue, the preset overshoot duration is determined as the first power supply duration of the current pixel point, and the preset overshoot duration is determined by the underdamped oscillation circuit;

[0092] The difference between the fixed power supply duration and the preset overshoot duration is used as the second power supply duration of the current pixel.

[0093] In some embodiments, during a first power supply duration of a current pixel, controlling an underdamped oscillator circuit corresponding to the current pixel to power the current pixel includes:

[0094] During a first power supply duration of a current pixel, a conventional overshoot grayscale voltage is input into an underdamped oscillation circuit, and the underdamped oscillation circuit is controlled to be turned on, wherein the conventional overshoot grayscale voltage is determined based on a current grayscale value of a current image and a target grayscale value of a target image using a liquid crystal drive acceleration technique;

[0095] Calculating a second oscillation voltage output by the under-damped oscillation circuit according to a conventional overshoot grayscale voltage, a current grayscale voltage of a current image, and a damping coefficient of the under-damped oscillation circuit;

[0096] The liquid crystal display is controlled to supply power to the current pixel point based on the second oscillation voltage.

[0097] In some embodiments, controlling the liquid crystal display to power the current pixel based on the target grayscale voltage during the second power supply duration of the current pixel includes:

[0098] During the second power supply duration of the current pixel, controlling the under-damped oscillation circuit to be cut off;

[0099] The LCD is controlled to supply power to the current pixel according to the preset overshoot duration and the traditional overshoot duration. The traditional overshoot duration is a duration pre-set according to the LCD drive acceleration technology.

[0100] Among them, the traditional overshoot grayscale voltage can be considered as the grayscale voltage determined by the liquid crystal drive acceleration technology based on the current grayscale value of the current image and the target grayscale value of the target image. For example, the traditional overshoot grayscale voltage can be determined by querying the data chart through the traditional OD function; the second oscillation voltage is the voltage of the oscillation waveform formed by the underdamped oscillation circuit performing attenuated oscillation near the traditional overshoot grayscale voltage; the traditional overshoot duration can be understood as the duration pre-set according to the liquid crystal drive acceleration technology. The driving voltage within the traditional overshoot duration is the traditional overshoot grayscale voltage, and the traditional overshoot duration is generally greater than or equal to the preset overshoot duration.

[0101] In another embodiment, if the current pixel point is not located in the priority power supply queue, it means that the input voltage of the current pixel point is located at the rear end of the data line, then the preset overshoot duration can be directly determined as the first power supply duration of the current pixel point, and the difference between the fixed power supply duration and the preset overshoot duration can be used as the second power supply duration of the current pixel point.

[0102] Furthermore, during the first power supply duration of the current pixel point, the voltage source Vd can be set to a traditional overshoot grayscale voltage, input into the underdamped oscillation circuit, and the underdamped oscillation circuit can be controlled to be turned on, so that the underdamped oscillation circuit forms an oscillation waveform based on the voltage source Vd, outputs a second oscillation voltage, and controls the liquid crystal display to use the second oscillation voltage to power the current pixel point.

[0103] Furthermore, within the second power supply duration of the current pixel point, the underdamped oscillation circuit can be controlled to be cut off, and the LCD display can be controlled to power the current pixel point according to the preset overshoot duration and the traditional overshoot duration. For example, different power supply controls can be performed on the current pixel point by comparing the size relationship between the preset overshoot duration and the traditional overshoot duration, or the power supply control of the current pixel point can be achieved by performing certain calculations on the two.

[0104] Exemplarily, the process of controlling the liquid crystal display to supply power to the current pixel may include: determining whether the conventional overshoot duration is greater than a preset overshoot duration, and correspondingly performing different power supply controls according to different determination results. For example, if the conventional overshoot duration is greater than the preset overshoot duration, it indicates that the overshoot duration set by the OD function is greater than the preset overshoot duration of the underdamped oscillation circuit. In this case, the second power supply duration may be further segmented into a third power supply duration and a fourth power supply duration. During the third power supply duration of the current pixel, the liquid crystal display may be controlled to supply power to the current pixel according to the conventional overshoot grayscale voltage, and during the fourth power supply duration of the current pixel, the liquid crystal display may be controlled to supply power to the current pixel according to the target grayscale voltage.

[0105] For example, if the traditional overshoot duration is equal to the preset overshoot duration, it means that the overshoot duration set by the OD function is consistent with the preset overshoot duration of the underdamped oscillation circuit. Then, within the second power supply duration of the current pixel, the LCD display can be directly controlled to power the current pixel based on the target grayscale voltage.

[0106] S204 : Controlling the underdamped oscillation circuit corresponding to the current pixel to supply power to the current pixel within a first power supply duration of the current pixel.

[0107] S205 : Control the liquid crystal display to supply power to the current pixel point based on the target grayscale voltage within the second power supply duration of the current pixel point.

[0108] The present embodiment provides a pixel power supply method, which determines whether the current pixel is in a priority power supply queue, and can specifically determine the first power supply duration and the second power supply duration of the current pixel based on different judgment results, thereby ensuring the accuracy of subsequent power supply and further improving the display quality of the image.

[0109] The following is an exemplary description of the power supply method for pixels provided in this embodiment:

[0110] When the LCD performs image switching, the current frame grayscale data can be first input into the LCD, and then the process of powering the pixels in sequence is started, such as determining whether the target pixel is at the front end of the data line. If the target pixel is at the front end of the data line, the traditional algorithm OD is turned off, the current frame grayscale data is compared with the previous frame grayscale data, and the corresponding under-damped oscillation circuit is enabled to power the target pixel; if the target pixel is not at the front end of the data line, the traditional algorithm OD is turned on, and the first power supply duration (i.e., OD time) is set to to, the current frame grayscale data is compared with the previous frame grayscale data, and the grayscale data is input according to the traditional algorithm 0D grayscale lookup table to determine the input voltage source Vd, and the hardware OD function (i.e., under-damped oscillation circuit) is turned on to power the current pixel; within the second power supply duration of the target pixel, the LCD can be controlled to power the current pixel based on the current frame grayscale voltage.

[0111] From the above description, it can be found that the liquid crystal display provided by this embodiment is provided with an OD functional circuit based on TFT in the surface. By constructing an underdamped oscillation circuit based on an active inductor L composed of R, C, and TFT, and modifying part of the surface structure to cooperate with this link, it can make the front section of each signal jump overshoot, and after the overshoot time ends, the voltage amplitude swings back to the normal value to achieve hardware OD. In addition, the power supply method for the pixel points provided by this embodiment also segments the data line. According to the different pixel positions, the different grayscale values ​​of the previous and next frames, and the requirements for the OD degree, the hardware OD and software algorithms are combined for application, which further matches the OD requirements of large-size high-refresh panels and ensures the quality of the picture.

[0112] Corresponding to the power supply method for the pixel points in the above embodiment, Figure 9 This is a structural block diagram of a power supply device for a pixel provided in one embodiment of the present application. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0113] Reference Figure 9 , the device comprises:

[0114] The first determining module 301 is configured to determine a target grayscale voltage required to display a target image when the liquid crystal display switches from displaying a current image to displaying a target image;

[0115] A second determining module 302 is configured to determine, when powering each pixel in the target image in sequence, a first power supply duration and a second power supply duration for the current pixel according to the power supply order of the current pixel among all the pixels, where the sum of the first power supply duration and the second power supply duration is the fixed power supply duration for the current pixel;

[0116] The first control module 303 is configured to control the underdamped oscillator circuit corresponding to the current pixel to supply power to the current pixel within a first power supply duration of the current pixel;

[0117] The second control module 304 is configured to control the liquid crystal display to supply power to the current pixel based on the target grayscale voltage within a second power supply duration of the current pixel.

[0118] The present embodiment provides a pixel power supply device, which determines, through a first determination module, a target grayscale voltage required to display a target image during a process in which a liquid crystal display switches from displaying a current image to a target image; determines, through a second determination module, a first power supply duration and a second power supply duration of the current pixel point according to the power supply order of the current pixel point among all pixel points when powering each pixel point in the target image in sequence, and the sum of the first power supply duration and the second power supply duration is a fixed power supply duration of the current pixel point; controls, through a first control module, an underdamped oscillation circuit corresponding to the current pixel point to power the current pixel point within the first power supply duration of the current pixel point; and controls, through a second control module, the liquid crystal display to power the current pixel point based on the target grayscale voltage within the second power supply duration of the current pixel point. By using this device, by setting an underdamped oscillation circuit in a liquid crystal display, it is possible to control the underdamped oscillation circuit corresponding to the current pixel point to power the current pixel point during the first power supply time of the current pixel point, and to control the liquid crystal display to power the current pixel point based on the target grayscale voltage during the second power supply time of the current pixel point. This can greatly avoid image distortion under high grayscale or low grayscale images and improve the display quality of the image.

[0119] Optionally, the second determining module includes:

[0120] A judgment unit, used to judge whether the current pixel point is located in the priority elevator queue and obtain a judgment result;

[0121] The determining unit is used to determine a first power supply duration and a second power supply duration of the current pixel point according to the judgment result.

[0122] Optionally, the determining unit is specifically configured to:

[0123] If the current pixel is located in the priority power supply queue, a first power supply duration of the current pixel is determined based on the current grayscale value of the current image, the target grayscale value of the target image, and a preset duration table. The preset duration table is used to store the correspondence between the first candidate grayscale value, the second candidate grayscale value, and the power supply duration. The first candidate grayscale value is the grayscale value of the current frame image, and the second candidate grayscale value is the grayscale value of the next frame image.

[0124] The difference between the fixed power supply duration and the first power supply duration is used as the second power supply duration of the current pixel.

[0125] Optionally, the first control module is specifically configured to:

[0126] During a first power supply duration of the current pixel, the target grayscale voltage is input into the underdamped oscillation circuit, and the underdamped oscillation circuit is controlled to be turned on;

[0127] Calculating a first oscillation voltage output by the under-damped oscillation circuit based on the target grayscale voltage, the current grayscale voltage of the current image, and the damping coefficient of the under-damped oscillation circuit, wherein the target grayscale voltage corresponds to the target grayscale value, and the current grayscale voltage corresponds to the current grayscale value;

[0128] The liquid crystal display is controlled to use the first oscillation voltage to power the current pixel.

[0129] Optionally, the second control module is specifically configured to:

[0130] During the second power supply duration of the current pixel, controlling the under-damped oscillation circuit to be cut off;

[0131] The liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage.

[0132] Optionally, the determining unit is specifically configured to:

[0133] If the current pixel point is not in the priority power supply queue, the preset overshoot duration is determined as the first power supply duration of the current pixel point, and the preset overshoot duration is determined by the underdamped oscillation circuit;

[0134] The difference between the fixed power supply duration and the preset overshoot duration is used as the second power supply duration of the current pixel.

[0135] Optionally, the first control module is specifically configured to:

[0136] During a first power supply duration of a current pixel, a conventional overshoot grayscale voltage is input into an underdamped oscillation circuit, and the underdamped oscillation circuit is controlled to be turned on, wherein the conventional overshoot grayscale voltage is determined based on a current grayscale value of a current image and a target grayscale value of a target image using a liquid crystal drive acceleration technique;

[0137] Calculating a second oscillation voltage output by the under-damped oscillation circuit according to a conventional overshoot grayscale voltage, a current grayscale voltage of a current image, and a damping coefficient of the under-damped oscillation circuit;

[0138] The liquid crystal display is controlled to supply power to the current pixel point based on the second oscillation voltage.

[0139] Optionally, the second control module includes:

[0140] A first control unit, configured to control the underdamped oscillation circuit to be cut off within a second power supply duration of the current pixel point;

[0141] The second control unit is used to control the liquid crystal display to supply power to the current pixel according to the preset overshoot time and the traditional overshoot time. The traditional overshoot time is a time preset according to the liquid crystal drive acceleration technology.

[0142] Optionally, the second control unit is specifically configured to:

[0143] Determine whether the traditional overshoot duration is greater than the preset overshoot duration;

[0144] If the conventional overshoot duration is greater than the preset overshoot duration, then, during a third power supply duration of the current pixel, the liquid crystal display is controlled to power the current pixel based on the conventional overshoot grayscale voltage, and during a fourth power supply duration of the current pixel, the liquid crystal display is controlled to power the current pixel based on the target grayscale voltage, where the sum of the third power supply duration and the fourth power supply duration is the second power supply duration;

[0145] If the conventional overshoot duration is equal to the preset overshoot duration, the liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage within the second power supply duration of the current pixel.

[0146] Optionally, each underdamped oscillation circuit includes: an active inductor L composed of a voltage source Vd, a first resistor R1 and a thin film transistor T1, a second resistor R2 and a capacitor C, wherein one end of the active inductor L, the second resistor R2 and one end of the capacitor C are connected in series in sequence, the other end of the active inductor L is connected to the input voltage, and the other end of the capacitor C is grounded, and the voltage of the capacitor C serves as the oscillation voltage output by the underdamped oscillation circuit and is connected to the corresponding pixel point.

[0147] Optional, underdamped oscillator damping factor Active Inductor Cgs is the gate-source parasitic capacitance of the thin film transistor T1 , and gm is the transconductance of the thin film transistor T1 .

[0148] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of this application. Their specific functions and technical effects can be found in the method embodiment section and will not be repeated here.

[0149] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0150] The embodiment of the present application further provides a liquid crystal display, Figure 10 : is a structural diagram of a liquid crystal display provided by an embodiment of the present application, such as Figure 10 As shown, the liquid crystal display includes: at least one processor 401, a memory 402, an input device 403, an output device 404, and a computer program stored in the memory 402 and executable on at least one processor 401. When the processor 401 executes the computer program, the steps in any of the above-mentioned method embodiments are implemented.

[0151] The input device 403 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the liquid crystal display. The output device 404 may include a display device such as a display screen.

[0152] The embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by the processor 401, the steps in the above-mentioned method embodiments can be implemented.

[0153] An embodiment of the present application provides a computer program product. When the computer program product is run on a liquid crystal display, the liquid crystal display can implement the steps in the above-mentioned various method embodiments when executing the computer program product.

[0154] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor 401, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, which can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying the computer program code to the device / liquid crystal display, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electric carrier signal, a telecommunication signal and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, a computer-readable medium cannot be an electric carrier signal or a telecommunication signal.

[0155] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0156] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0157] In the embodiments provided in the present application, it should be understood that the disclosed devices / LCD displays and methods can be implemented in other ways. For example, the device / LCD display embodiments described above are merely schematic. For example, the division of modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0158] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0159] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A method for powering a pixel, characterized in that: Applied to a liquid crystal display, the liquid crystal display is provided with a plurality of underdamped oscillation circuits, each of the underdamped oscillation circuits is connected to a pixel point, and the method includes: During a process in which the liquid crystal display switches from displaying a current image to displaying a target image, determining a target grayscale voltage required to display the target image; When powering each pixel in the target image in sequence, determining a first power supply duration and a second power supply duration for the current pixel according to the power supply order of the current pixel among all the pixels, where the sum of the first power supply duration and the second power supply duration is the fixed power supply duration for the current pixel; controlling the underdamped oscillation circuit corresponding to the current pixel point to supply power to the current pixel point within a first power supply duration of the current pixel point; During a second power supply duration of the current pixel, the liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage.

2. A pixel power supply method according to claim 1, characterized in that: The determining, according to the power supply sequence of the current pixel point among all the pixel points, the first power supply duration and the second power supply duration of the current pixel point includes: Determine whether the current pixel point is located in the priority elevator queue, and obtain a determination result; According to the judgment result, a first power supply duration and a second power supply duration of the current pixel are determined.

3. A pixel power supply method according to claim 2, characterized in that: The determining, according to the judgment result, a first power supply duration and a second power supply duration of the current pixel point includes: If the current pixel is located in the priority power supply queue, determining a first power supply duration of the current pixel based on the current grayscale value of the current image, the target grayscale value of the target image, and a preset duration table, wherein the preset duration table is used to store a correspondence between a first candidate grayscale value, a second candidate grayscale value, and the power supply duration, the first candidate grayscale value being the grayscale value of the current frame image, and the second candidate grayscale value being the grayscale value of the next frame image; The difference between the fixed power supply duration and the first power supply duration is used as the second power supply duration of the current pixel.

4. A pixel power supply method according to claim 3, characterized in that: The controlling the underdamped oscillation circuit corresponding to the current pixel point to supply power to the current pixel point during the first power supply duration of the current pixel point includes: During a first power supply duration of the current pixel, inputting the target grayscale voltage into the underdamped oscillation circuit and controlling the underdamped oscillation circuit to be turned on; calculating a first oscillation voltage output by the under-damped oscillation circuit according to the target grayscale voltage, the current grayscale voltage of the current image, and a damping coefficient of the under-damped oscillation circuit, wherein the target grayscale voltage corresponds to the target grayscale value in a one-to-one manner, and the current grayscale voltage corresponds to the current grayscale value in a one-to-one manner; The liquid crystal display is controlled to use the first oscillation voltage to power the current pixel.

5. A pixel power supply method according to claim 3, characterized in that: The controlling the liquid crystal display to supply power to the current pixel point based on the target grayscale voltage during the second power supply duration of the current pixel point includes: Controlling the underdamped oscillation circuit to be cut off within a second power supply duration of the current pixel point; The liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage.

6. A pixel power supply method according to claim 2, characterized in that: The determining, according to the judgment result, a first power supply duration and a second power supply duration of the current pixel point includes: If the current pixel point is not located in the priority power supply queue, a preset overshoot duration is determined as the first power supply duration of the current pixel point, wherein the preset overshoot duration is determined by the underdamped oscillation circuit; The difference between the fixed power supply duration and the preset overshoot duration is used as the second power supply duration of the current pixel.

7. A pixel power supply method according to claim 6, characterized in that: The controlling the underdamped oscillation circuit corresponding to the current pixel point to supply power to the current pixel point during the first power supply duration of the current pixel point includes: During a first power supply duration of the current pixel, a conventional overshoot grayscale voltage is input into the underdamped oscillation circuit, and the underdamped oscillation circuit is controlled to be conductive, wherein the conventional overshoot grayscale voltage is determined based on a current grayscale value of the current image and a target grayscale value of the target image using a liquid crystal drive acceleration technique; Calculating a second oscillation voltage output by the under-damped oscillation circuit according to the conventional overshoot grayscale voltage, the current grayscale voltage of the current image, and the damping coefficient of the under-damped oscillation circuit; The liquid crystal display is controlled to supply power to the current pixel point based on the second oscillation voltage.

8. The pixel power supply method according to claim 6, wherein: The controlling the liquid crystal display to supply power to the current pixel point based on the target grayscale voltage during the second power supply duration of the current pixel point includes: Controlling the underdamped oscillation circuit to be cut off within a second power supply duration of the current pixel point; The liquid crystal display is controlled to supply power to the current pixel according to the preset overshoot duration and the traditional overshoot duration, wherein the traditional overshoot duration is a duration preset according to liquid crystal drive acceleration technology.

9. A pixel power supply method according to claim 8, characterized in that: The controlling the liquid crystal display to supply power to the current pixel according to the preset overshoot duration and the traditional overshoot duration includes: Determining whether the traditional overshoot duration is greater than the preset overshoot duration; If the conventional overshoot duration is greater than the preset overshoot duration, controlling the liquid crystal display to power the current pixel based on the conventional overshoot grayscale voltage within a third power supply duration of the current pixel, and controlling the liquid crystal display to power the current pixel based on the target grayscale voltage within a fourth power supply duration of the current pixel, where the sum of the third power supply duration and the fourth power supply duration is the second power supply duration; If the conventional overshoot duration is equal to the preset overshoot duration, the liquid crystal display is controlled to supply power to the current pixel based on the target grayscale voltage within the second power supply duration of the current pixel.

10. The pixel power supply method according to claim 1, wherein: Each of the underdamped oscillation circuits includes: an active inductor L consisting of a voltage source Vd, a first resistor R1 and a thin film transistor T1, a second resistor R2, and a capacitor C, wherein one end of the active inductor L, the second resistor R2, and one end of the capacitor C are connected in series in sequence, the other end of the active inductor L is connected to the input voltage, and the other end of the capacitor C is grounded. The voltage of the capacitor C serves as the oscillation voltage output by the underdamped oscillation circuit and is connected to the corresponding pixel point.

11. A pixel power supply method according to claim 10, characterized in that: The damping coefficient of the underdamped oscillation circuit Active Inductor Cgs is the gate-source parasitic capacitance of the thin film transistor T1 , and gm is the transconductance of the thin film transistor T1 .

12. A power supply device for a pixel, characterized in that: The device is configured for a liquid crystal display, wherein the liquid crystal display is provided with a plurality of underdamped oscillation circuits, each of which is connected to a pixel point, and comprises: A first determining module is configured to determine a target grayscale voltage required to display a target image when the liquid crystal display switches from displaying a current image to displaying a target image; a second determining module, configured to determine, when powering each pixel in the target image in sequence, a first power supply duration and a second power supply duration of the current pixel according to the power supply order of the current pixel among all the pixels, wherein the sum of the first power supply duration and the second power supply duration is a fixed power supply duration of the current pixel; a first control module, configured to control the underdamped oscillation circuit corresponding to the current pixel point to supply power to the current pixel point within a first power supply duration of the current pixel point; The second control module is configured to control the liquid crystal display to supply power to the current pixel point based on the target grayscale voltage within a second power supply duration of the current pixel point.

13. A liquid crystal display comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the liquid crystal display implements the method according to any one of claims 1 to 11.

14. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

15. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, causes the method according to any one of claims 1 to 11 to be performed.

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